The 2015 GMC Yukon is a body-on-frame SUV available in three trim levels: SLE, SLT and Denali. Seating for eight is standard. The base Yukon SLE comes standard with 18-inch alloy wheels, foglamps, a locking rear differential, front and rear parking sensors, heated power-adjustable manual-folding mirrors, automatic wipers, a tilt-only leather-wrapped steering wheel, tri-zone automatic climate control, premium cloth upholstery, power front seats, a 60/40 split-fold second-row bench seat and a 60/40-split fold-flat third-row seat. The SLT model includes the both the Driver Alert and Convenience packages and adds rear cross-traffic alert and blind-spot monitoring, power-folding mirrors (auto-dimming driver side), keyless ignition and entry, a power tilt-and-telescoping steering wheel, a heated steering wheel, driver memory settings, heated and ventilated front seats (10-way with four-way lumbar), heated second-row seats, power folding third-row seats and ambient interior lighting.